TOKYO JAPAN 1987 CASALS HALL Acoustics Consultant: NAGATA ACOUSTICS, Inc. Architect: Arata Isozaki & Associates Owners: Shufunotomo Co., Ltd. Sound & Communications: NAGATA ACOUSTICS, Inc. Construction Cost: ￥7,000 Million JPY BUILDING DETAILS AND ACOUSTICS DATA Location 1-6 kanda-surugadai, chiyoda-ku Tokyo 101-0062, Japan Tel 03-3294-1229 Seating Capacity 511 Room Volume 6,060 CM Surface Area 2,260 SM Stage Area 150 SM Reverberation Time (Mid-Frequency) Unoccupied 1.7 sec Occupied 1.4 sec Finishing Materials Ceiling : 2-3 layers of gypsum board (12 mm x 2-3) Stage Wall : 40 mm artificial wood Lower Side Wall : 40 mm pre-cast concrete panel Upper Side Wall : 20 mm artificial wood Floor : 20 mm wooden board on concrete Seat : Upholstered Organ : 41 stops (Jürgen Ahrend, Germany) Noise Level : NC-15 Other Facilities : Vories Hall (100-150 seats) Total Cost : ￥7,000 Million JPY Total Floor Area : 22,232 SM Casals Hall, named after Pablo Casals, was opened in Tokyo in October 1987. The hall, with 511 seats, was planned and designed exclusively for chamber music and smaller ensembles. The room shape is typical shoebox with side balconies and flat ground floor. The side walls of the main floor are of pre-cast concrete panels imitating draperies in order to scatter sound reflections. The upper part of the side walls and ceiling are finished with laminated gypsum boards of a minimum thickness of 24mm to avoid excess absorption at low frequencies. Just after the opening of the hall, the excessive liveness of the stage space designed in consideration of the future installation of the organ was pointed out by a few music players and some members of the audience, especially in piano recitals. In March 1997, an organ with 41 stops was installed at the front part of the hall as part of the 10th anniversary festivities. This organ, designed by J. Ahrendt, is the first baroque style organ for 16th-17 th century organ music in Japan. After the instal- lation of the organ, the problem of excess liveness has been resolved. REVERBERATION TIME 63 125 250 500 1000 2000 4000 8000 0.5 1.0 1.5 2.0 2.5 3.0 3.5 REVERBERATION TIME IN SECOND 1/1 OCTAVE BAND CENTER FREQUENCIES IN HERTZ Unoccupied Occupied
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TOKYO JAPAN 1987
CASALS HALL
Acoustics Consultant: NAGATA ACOUSTICS, Inc.
Architect: Arata Isozaki & Associates
Owners: Shufunotomo Co., Ltd.
Sound & Communications: NAGATA ACOUSTICS, Inc.
Construction Cost: ￥7,000 Million JPY
BUILDING DETAILS AND ACOUSTICS DATA Location 1-6 kanda-surugadai, chiyoda-ku Tokyo 101-0062, Japan Tel 03-3294-1229 Seating Capacity 511 Room Volume 6,060 CM Surface Area 2,260 SM Stage Area 150 SM Reverberation Time (Mid-Frequency) Unoccupied 1.7 sec Occupied 1.4 sec Finishing Materials Ceiling : 2-3 layers of gypsum board (12 mm x 2-3) Stage Wall : 40 mm artificial wood Lower Side Wall : 40 mm pre-cast concrete panel Upper Side Wall : 20 mm artificial wood Floor : 20 mm wooden board on concrete Seat : Upholstered Organ : 41 stops (Jürgen Ahrend, Germany) Noise Level : NC-15 Other Facilities : Vories Hall (100-150 seats) Total Cost : ￥7,000 Million JPY Total Floor Area : 22,232 SM
Casals Hall, named after Pablo Casals, was opened in Tokyo in October 1987. The hall, with 511 seats, was planned and designed exclusively for chamber music and smaller ensembles. The room shape is typical shoebox with side balconies and flat ground floor. The side walls of the main floor are of pre-cast concrete panels imitating draperies in order to scatter sound reflections. The upper part of the side walls and ceiling are finished with laminated gypsum boards of a minimum thickness of 24mm to avoid excess absorption at low frequencies. Just after the opening of the hall, the excessive liveness of the stage space designed in consideration of the future installation of the organ was pointed out by a few music players and some members of the audience, especially in piano recitals. In March 1997, an organ with 41 stops was installed at the front part of the hall as part of the 10th anniversary festivities. This organ, designed by J. Ahrendt, is the first baroque style organ for 16th-17th century organ music in Japan. After the instal-lation of the organ, the problem of excess liveness has been resolved.
REVERBERATION TIME
63 125 250 500 1000 2000 4000 80000.5
1.0
1.5
2.0
2.5
3.0
3.5
REV
ER
BER
ATIO
N T
IME IN
SEC
ON
D
1/1 OCTAVE BAND CENTER FREQUENCIES IN HERTZ
Unoccupied
Occupied
TOKYO JAPAN 1987
CASALS HALL
LONGITUDINAL SECTION TRANSVERS SECTION
PLAN
SIDE WALL (PRE-CAST CONCRETE PANEL)
63 125 250 500 1000 2000 4000 80000.5
1.0
1.5
2.0
2.5
3.0
3.5
AFTER
BEFORE
REV
ER
BER
ATIO
N T
IME IN
SEC
ON
D
1/1 OCTAVE BAND CENTER FREQUENCIES IN HERTZ
REVERBERATION TIME (OCCUPIED) BEFORE / AFTER ORGAN INSTLATION
1st floor
2nd floor
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